If the temperature decreases by a factor of 2, how much will the energy decrease? We have two relations for the energy from the two different temperatures. Eold = o(Told) 4 Enew = σ(Tnew) 4 We know that if the new temperature is n times less than the old temperature then: Told Using this in our expression for Eld gives: =nT new Eold = n²o (Tnew) 4 new = 4²old n So, the energy will decrease by a factor of

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Part 3 of 4
If the temperature decreases by a factor of 2, how much will the energy decrease?
We have two relations for the energy from the two different temperatures.
o(Told) 4
σ(Tnew) 4
E old
E new
We know that if the new temperature is n times less than the old temperature then:
=
=
Told
new
Using this in our expression for Eold gives:
Eold
=nT
=
nªo (Tnew)4
E =
new
4 old
So, the energy will decrease by a factor of
Transcribed Image Text:Part 3 of 4 If the temperature decreases by a factor of 2, how much will the energy decrease? We have two relations for the energy from the two different temperatures. o(Told) 4 σ(Tnew) 4 E old E new We know that if the new temperature is n times less than the old temperature then: = = Told new Using this in our expression for Eold gives: Eold =nT = nªo (Tnew)4 E = new 4 old So, the energy will decrease by a factor of
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Please help with Part 4 of 4. Thank you!

Part 4 of 4
Star B has a temperature that is 5 times higher than Star A. How much more energy per second (compared to Star A) does it radiate onto a square meter of its surface?
EA = σ(TA) 4
EB = σ(T₂)4
Again, we know that Star B's temperature is n times Star A's.
TB = nTA
EB = σ(nTA) 4
So in terms of Star A's energy, Star B's is:
EB =
EA
Transcribed Image Text:Part 4 of 4 Star B has a temperature that is 5 times higher than Star A. How much more energy per second (compared to Star A) does it radiate onto a square meter of its surface? EA = σ(TA) 4 EB = σ(T₂)4 Again, we know that Star B's temperature is n times Star A's. TB = nTA EB = σ(nTA) 4 So in terms of Star A's energy, Star B's is: EB = EA
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